JEE Main Questions
Permutations and Combinations
Computer (i) 5!7! (ii) (10!)(2!)12!
It is required to seat 5 men and 4 women in a row so that the women occupy the even places. How many such arrangements are possible ?
If the number of selections of 6 different letters that can be made from the words SUMAN and DIVYA so that each selection contains 3 letters from each word is N2, then the value of N is________.
From a class of 25 students, 10 are to be chosen for an excursion party. There are 3 students who decide that either all of them will join or none of them will join. In how many ways can the excursion party be chosen?
The number of different ways in which five "alike dashes" and "eight alike" dots can be arranged using only seven of these "dashes" and "dots" is a. 350 b. 120 c. 1287 d. none of these
How many 4-digit numbers can be formed by using the digits 1 to 9 if repetition of digits is not allowed?
Find the total number of nine-digit numbers that can be formed using the digits 2, 2, 3, 3, 5, 5, 8, 8, 8 so that the odd digit occupy the even places.